Bairdia jeromei, Forel, 2012
publication ID |
https://doi.org/ 10.5852/ejt.2012.19 |
publication LSID |
lsid:zoobank.org:pub:893DB151-7B86-485C-932F-A01C57B20316 |
DOI |
https://doi.org/10.5281/zenodo.3858784 |
persistent identifier |
https://treatment.plazi.org/id/F4F902E4-E008-4156-9124-CF5CDE4BA71A |
taxon LSID |
lsid:zoobank.org:act:F4F902E4-E008-4156-9124-CF5CDE4BA71A |
treatment provided by |
Carolina |
scientific name |
Bairdia jeromei |
status |
sp. nov. |
Bairdia jeromei sp. nov.
Fig. 4 View Fig G-P
Diagnosis
Massive and subrectangular species of Bairdia , with DB and VB subparallel, long DB (~ 60% of Lmax), rhombic dorsal view.
Etymology
Personal dedication to Jérôme Cougoul.
Material examined
Holotype
One carapace ( Fig. 4G View Fig ), sample 05PAJ43, collection number P6M2945.
Paratype
One carapace ( Fig. 4J View Fig ), sample 05PAJ43, collection number P6M2948.
Other material
10 carapaces, several fragments. The species is known from its type locality only.
Type locality
Wujiaping and Daye Formations (samples 05PAJ23, 25, 26, 28, 32, 42, 43), Dajiang section (25°33’56’’N- 106°39’41’’E), Guizhou Province, South China, Changhsingian and Griesbachian, Late Permian and Early Triassic.
Measurements ( Fig. 6 View Fig )
L = 722 – 1024 μm; H = 410 – 597 μm; H/L = 0.56 – 0.64.
Description
Carapace massive, elongated and subrectangular in lateral view; surface smooth; LV larger than RV, overlapping at dorsum and VB; bairdian beaks at AB and PB poorly expressed; PDB, DB and ADB distinct at both valves; PDB steeply bent backward, long (~ 65% of Hmax) and slightly convex; DB long (~60% of Lmax) and gently convex; ADB slightly concave at RV, shorter than PDB; ventral part rounded; VB long, convex at LV, concave at RV; AVB and PVB rounded, AVB longer than PVB; carapace slightly postplete to amplete; Lmax below mid-H; dorsal view rhombic with LV’s Wmax in posterior 1/3 of Lmax, in anterior 1/3 at RV.
Remarks
In lateral view, Bairdia jeromei sp. nov. is similar to Orthobairdia sp.1 sensu Crasquin et al., 2010 from the Permian of the Meishan section, Zhejiang Province, South China ( Crasquin et al. 2010) but here the dorsal view clearly precludes the generic attribution to Orthobairdia .
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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SuperFamily |
Bairdioidea |
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